• Experiment title.
• Hypotheses: both alternative and the null (5 points).
• Mean and standard deviation of each group (5 points).
• Clear indication of the hypothesis test being conducted and the obtained statistic (10 points).
• The results and conclusion (5 points).

Experiment 3: Does sleep deprivation affect sustained attention?

A sleep researcher conducts an experiment to determine whether sleep loss affects the ability to maintain sustained attention. Fifteen individuals are randomly divided into the following three groups of five participants each: group 1, which gets the normal amount of sleep (7-8 hours); group 2, which is sleep-deprived for 24 hours; and group 3, which is sleep-deprived for 48 hours. All three groups are tested on the same auditory vigilance task. Participants are presented with half-second tones spaced at irregular intervals over a 1-hour duration. Occasionally, one of the tones is slightly shorter than the rest. The participant's task is to detect the shorter tones. The following percentages of correct detections of the short tone were observed:

Not sleep deprived	Sleep deprived 24 hours	Sleep deprived 48 hours
85	60	60
83	58	48
76	76	38
64	52	47
75	63	50